Instruction 18-4
a Manufacturer of Computer Disks Took Samples of 240

question 81

Short Answer

Instruction 18-4
A manufacturer of computer disks took samples of 240 disks on 15 consecutive days. The number of disks with bad sectors was determined for each of these samples. The results are in the table that follows.
$$\begin{array} { l l l } \text { Day } & \text { Bad } & \text { \% Bad } \\1 & 9 & 0.037500 \\2 & 7 & 0.029167 \\3 & 4 & 0.016667 \\4 & 6 & 0.025000 \\5 & 8 & 0.033333 \\6 & 3 & 0.012500 \\7 & 6 & 0.025000 \\8 & 10 & 0.041667 \\9 & 16 & 0.066667 \\10 & 24 & 0.100000 \\11 & 15 & 0.062500 \\12 & 9 & 0.037500 \\13 & 4 & 0.016667 \\14 & 8 & 0.033333 \\15 & 6 & 0.025000\end{array}$$
-Referring to Instruction 18-4,a p control chart is to be made for these data.The upper control limit is _______,and the lower control limit is _______.

Recognize the application and calculation of weighted moving average forecasting.

Comprehend the role of smoothing constants in exponential smoothing and their adjustment for error minimization.

Discuss the practical challenges and realities faced by companies in forecasting.

Describe the methodology, usage, and comparison of time-series forecasting models and associative models.

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Definitions:

Equity Method Investments

Accounting for investments in which the investor has significant influence over the investee, recognizing proportional earnings of the investee.

Cash Dividends

Payments made by a corporation to its shareholders from its profits or reserves.

Common Stock

A type of equity security that represents ownership in a corporation, giving holders voting rights and a claim on a portion of the company's profits in the form of dividends.

Debt Securities

Financial instruments representing a loan made by an investor to a borrower, typically including bonds, notes, and bills.